Beiträge zur Morphologie der Terrassenlandschaft des Luxemburgischen Moselgebietes / door Nicolaas Arie de RidderBeiträge zur Morphologie der Terrassenlandschaft des Luxemburgischen Moselgebietes / Nicolaas Arie de RidderIndirect evidence for transcurrent faulting and some examples from New Zealand and the Netherlands / [by] N.A. de Ridder, and G.J. LensenOptimum use of water resources / N.A. de Ridder, A. ErezGrondwaterbespiegelingen / N.A. de RidderHydrogeological investigations of the Peel region and its environs / N.A. de Ridder, P. Hondius, A.J. Hellings
author
Productivity of Sahelian rangelands : a study of the soils, the vegetations, and the exploitation of that natural resource / compiled by N. de Ridder ... [et al.] : PPS course bookStudies of salt and water movement in the Bol Guini polder, Chad Republic / P.J. Dieleman, N.A. de RidderAnalysis and evaluation of pumping test data / G.P. Kruseman, N.A. de RidderAnalysis and evaluation of pumping test data / [by] G. P. Kruseman [and] N. A. De RidderAnalysis and evaluation of pumping test data / G. P. Kruseman, N. A. de Ridder